I planned to make a rotating dynamic drawing at first, so I started to build a circle of squares and when the mouse wheel was moved, the size of squares would be changed. However, I realized moving the wheel can also scroll down the page which would be very inconvenient. Therefore, I decided to change moving the wheel by dragging the mouse. Also, I realized it would be fun to change the color of squares, so I have made the color can be changed whenever the mouse is hovering on the squares.